error in firebug dragging dock

[gnomo]

In your portal page sample in http://www.telerik.com/DEMOS/ASPNET/Prometheus/Dock/Examples/Default/DefaultCS.aspx
an error occours when dragging a dock. This only happens in Firefox with firebug installed and only if I start the dragging movement over the title.
In other words, if the mousedown movement to initiate the drag is made over the title of the dock, when I drop the dock elsewhere an error occours, but, if the mousedown is made in an empty area of the Titlebar then everything is ok.
The error message is shown below.

[Exception... "Could not convert JavaScript argument" nsresult: "0x80570009 (NS_ERROR_XPC_BAD_CONVERT_JS)" location: "JS frame :: http://www.telerik.com/demos/aspnet/Prometheus/ScriptResource.axd?d=rD5r3VBiCltpZRpZoTgOhaR47Vl6WggNPnMijesWGG58iGLVJnvM7eBFdXkQBOp_0&t=633184735740000000 :: anonymous :: line 5" data: no]

[Petio Petkov]

Hi gnomo,

We are aware for this issue and we will do our best to fix it soon. Please accept our apologies for the temporary inconvenience.




Best wishes,
Petio Petkov
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

[lchesnais]

Hello,

Do you have any update on this subject? The issue still occurs.

BR, Laurent

[Petya]

Hello lchesnais,

As far as we investigated the error it is thrown by the MS AJAX framework because it is trying to get the style of a non element node. To workaround this problem we redefined the Sys.UI.DomElement._getCurrentStyle method by just adding one extra line as compared to the original one to perform a check whether the element whose style is to be taken is of element node type:

<script type="text/javascript">

            Sys.UI.DomElement._getCurrentStyle = function Sys$UI$DomElement$_getCurrentStyle(element)
            {
                //TELERIK - do not obtain style for text or other non-HTML elements
                if (element.nodeType != 1) return;
                var w = (element.ownerDocument ? element.ownerDocument : element.documentElement).defaultView;
                return ((w && (element !== w) && w.getComputedStyle) ? w.getComputedStyle(element, null) : element.style);
            }
        </script>

Please, add this script to your page and let us know if the problem persists.

Regards,
Petya
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

[lchesnais]

Thank you Petya.
Works perfect for me.

BR, Laurent